Patents by Inventor Ulrich W. Baur

Ulrich W. Baur has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Scan structure for improving transition fault coverage and scan diagnostics
    Patent number: 6490702
    Abstract: A scan chain latch circuit is provided. The scan chain latch circuit includes a first shift register latch and a second shift register latch. The scan chain latch circuit also includes a multiplexor connected between the first and second shift register latches, the multiplexor has a select line for controlling the function of the multiplexor. The multiplexor is configured for implementing an inverting mode such that a logic value may be passed via the multiplexor from the first shift register latch to the second shift register latch in one of a non-inverted state and an inverted state based upon the state of the select line.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: December 3, 2002
    Assignee: International Business Machines Corporation
    Inventors: Peilin Song, Richard F. Rizzolo, Franco Motika, Ulrich W. Baur